Defective / unstable backlight controller - Xperia Z1 Compact General

Hi all
I just want to share my experiences with my second Sony Z1 Compact, which after 1-2 month started showing problems with the backlight.
The backlight is unstable, meaning that it is "blinking" while I am browsing webpages. It is most noticeable / present just after loading a page or after scrolling... after a while it seems to stabilize.
It happens no matter if the backlight is set to automatic adjustment or set completely manually.
Also the backlight is not able to be as bright as normal. For outdoor usage in sunlight or bright light the phone is useless due to this.
Also, it barely changes the backlight strength/brightness if I adjust the slider. Something is completely wrong. It happens in Kitkat 4.4.4 and 5.1.1 and after factory resets.
I have never rooted it.
See my comparison videos here:
https://www.youtube.com/watch?v=Xd05C2cg5B0
https://www.youtube.com/watch?v=t9oVWpsxpjU
Have anybody else experienced anything similar?
I have returned the phone to service, but they claimed "no errors found" even though I explained how to do just like in the videoes.
Now I've returned it to service again (as they didn't repair anything the first time) with some more details and with these videoes attached. I will be really mad if they try to give it back to me with "no errors found".
I am 99% sure that this is a hardware problem, and that it won't disappear through any software updates or firmware hacks.

Related

Screen Flicker

Anyone else notice screen Flicker when the display is on the lowest brightness setting? I am noticing it on the bottom half of the screen usually when the phone first goes into the dim setting (manually or automatically). After it is in the dimmest setting for a while, it eventually stops. Or, if i manually move the setting off the lowest setting by even the smallest amount it stops. I've been running SACS Rom nearly since I got the phone, but the flicker started about 3 versions ago. I'm thinking it may be a hardware issue.
Sent from my SPH-L720 using xda app-developers app
leefer77 said:
Anyone else notice screen Flicker when the display is on the lowest brightness setting? I am noticing it on the bottom half of the screen usually when the phone first goes into the dim setting (manually or automatically). After it is in the dimmest setting for a while, it eventually stops. Or, if i manually move the setting off the lowest setting by even the smallest amount it stops. I've been running SACS Rom nearly since I got the phone, but the flicker started about 3 versions ago. I'm thinking it may be a hardware issue.
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Anyone else having this problem? I have my phone set to stay on while charging in developer options. However, when the phone isn't touched for a little bit the screen dims and flickers like crazy. As soon as I touch the screen, it comes back to regular brightness and the flicker is gone. Any idea what the problem is and how to resolve it? I leave my phone in a dock all day on my desk and the flickering is driving me insane. I'm on the original GS4, not rooted, latest KitKat installed.
So the issue got progressively worse and I am approaching my warranty date so I contacted Samsung and they had me do a cache partition wipe. So far so good. I see the issue only so faintly and I don't think I wouldn't notice if I wasn't looking for it. I will see if the problem returns and if so, have the phone swapped out. I don't want to be stuck with a potential dud after the warranty expires.
I've never experienced this with a TW stock rom(http://forum.xda-developers.com/showthread.php?t=2650706) with NAE baseband.

the screen is flikering

hi guys, need help with following:
sometimes the screen flickers and stop responding overal....when he is in the mood. Sometimes works 2-3 hours with no problem and sometimes I cant use it at all - display is flickering and stop responding and if I lock the screen with power button and push the button again the screen is unfreezing for a while. I have tried everything- reinstal oficial ROM, root the phone and instal some custom ROMs, custom recovery, wipe and clean everything nothing helps. Мy suspicions are that there is some hardware problem and there is no software solution, but if someone has faced such troubles and find a way to resolve them pls share
mastersvara said:
hi guys, need help with following:
sometimes the screen flickers and stop responding overal....when he is in the mood. Sometimes works 2-3 hours with no problem and sometimes I cant use it at all - display is flickering and stop responding and if I lock the screen with power button and push the button again the screen is unfreezing for a while. I have tried everything- reinstal oficial ROM, root the phone and instal some custom ROMs, custom recovery, wipe and clean everything nothing helps. Мy suspicions are that there is some hardware problem and there is no software solution, but if someone has faced such troubles and find a way to resolve them pls share
Click to expand...
Click to collapse
it probably is a hardware issue, most likely the adreno GPU failing. Youve flashed the tar.md5 stock firmware and its still doing it? If so, its very likely a hardware issue
youdoofus said:
it probably is a hardware issue, most likely the adreno GPU failing. Youve flashed the tar.md5 stock firmware and its still doing it? If so, its very likely a hardware issue
Click to expand...
Click to collapse
yep, I've flashed the original tar, also tried with 4 file with pit. Some time the phone starts flickers on the Samsung logo at the beginning, some time passes the logo and initial setup and then starts....maybe your are right, I just love my phone and didn't want to RIP him. The only thing I didn't try is to install something different than Marshmallow and to decrease working frequencies. Can you please tell me if the problem is form GPU is it worth to be fixed?
you could try a new battery , my S3 had screen flickering problems at aprox 30% battery and then freezes and reboot and battery after reboot suddenly 2% and after that screen flicker and no power anymore.
Try reboot with only charger connected and no battery connected
can't do that - the phone cannot be started without battery inside. Furthermore the battery is brand new original and I start using it after the problems started
You can look with phone info app from play store. Look which date the phone was made and when its more then 2 years then its hardware issue. On my display its only flickering on the very lowest brightness levels when i make it brighter the flickering is gone. When your phone is so too then its hardware issue but i will look with another battery from a friend and will report. I think its the display like plasma 1-2 years burn-in.
Greetings from Germany
Best Regards
I had the same problem with screen flickering with my s5 (QCOM variant). It had started after screen replacement in a repair point. It would get the worst when screen brightess was at the minimum level. Sometimes the screen would not wake up, and low temperature/ low battery level made it even worse. The answer to the problem is a defective screen which needs replacing. No other way as far as I know.
the screen is flickering
moffa89 said:
You can look with phone info app from play store. Look which date the phone was made and when its more then 2 years then its hardware issue. On my display its only flickering on the very lowest brightness levels when i make it brighter the flickering is gone. When your phone is so too then its hardware issue but i will look with another battery from a friend and will report. I think its the display like plasma 1-2 years burn-in.
Greetings from Germany
Best Regards
Click to expand...
Click to collapse
I have the Samsung Galaxy S5. I also had the issue of when I had the screen brightness on auto it would flicker or if it was on a low setting it would do the same. If I raised the brightness it would stop. When the battery goes below 8% it starts flickering non-stop and the only way to stop it is to plug it in to an outlet. I took it to Verizon about 6 months ago (about the 2 1/2 year mark when it had been doing it since around 2 years) - of course their immediate answer was to do a factory reset and after that they had no solution (I did NOT do a factory reset). I'm eager to hear if a new battery corrects it or if it is indeed the screen/display. This may be a way to make sure we get a new phone every two years...
my case looks different. The flickering not depend form brightens or remaining charge in battery. Furthermore sometime it stops at all and I can use the phone without any problems for 1 or 2 hours. I did factory reset several time and reinstall software (official and custom). Perhaps there is some hardware issue and a phone upgrade is upcoming.
I tested with a battery from a friend yesterday and its the same. I will do this week a odin stock flash day and then i will see. But i think its the display.

Always on Display and backlight

When I use "Always on display" on my edge the screen doesn't becomes completely black, remains like LCD screen with backlight on.
Check the pics: first with Samsung AOD and "gray" screen, second with Amoled Display app on play store with perfect amoled black.
How is your screen?
I've got this very same problem. I've tried resetting the AoD app's settings and clearing the device's cache in the recovery but that didn't fix it. I haven't tried factory resetting yet because I don't have the time now to set up my phone from the ground up.
Do you have any fix for this? Have you tried factory resetting?
* Please note that the diagonal lines are an artifact from my camera, and not actually visible on the display.
nope. I don't think that factory reset can solve this problem.
Today my s7 edge received the december security patch with 273 Mb update but the "problem" remains.
Now I'm using the pay app "Always on amoled" and it works perfectly
It might as well be a hardware issue with the AMOLED panel. After NYE, I'd try factory resetting the device first, and if that doesn't fix it, I'll probably send it for warranty repair.
nah, with another app is perfect. It's software related ( with some panels ) I think Samsung use different panel with different voltage or similar cuz my friends s7 edge is completely black and another one is like mine.
Hello, did anyone come up with a solution to this (apart from using the third party app?) I have exact the same issue, and my colleague at work also has an S7 Edge bought from the same shop with no problem. Mine used to be fine, but stopped being black a few months ago; it also happens with the edge screen {see pics} , but not the third party app. I have the unlocked EU Exynos variant. Likewise have tried different versions of the app, even different firmwares and all have the same issue.
I had this on my first S7 edge after 3 months... only fixed by replacing the screen unfortunatley (under warranty)
I have got this problem and i think I am going to use a guaranty, I dont understand how other third party app works, but there are problems with AOD.
Software bug?????
Interestingly, I had this problem with my S7 Edge from the time I purchased it back in August. It occurred with AOD as well as Night Clock...so much so that I didn't use Night Clock due to the faint "glow" right by my head. Nothing fixed it...factory reset, updates, display tweaks, nothing. My fiancee, who got her phone about a month before me, never had this problem. At the time, a warranty replacement was suggested, but I chose not to since it's wasn't a big deal I just lived without the night clock or AOD since I'd never used them before anyway.
Fast forward to January of this year. My device developed the green vertical line along the edge that persisted through reboots. Some others have reported pink or other color similar lines and it's a fairly well known defect. Had the phone replaced under warranty and the new device doesn't suffer from this problem. My fiancee's phone still has not developed this issue.
I'm wondering if the two items...the vertical line issue and the faint glow from the panel, are related and the result of a hardware defect. I'm going out on a limb and saying yes. I would suggest that anyone with this issue take advantage of a warranty replacement since it appears other screen issues might crop up as well.
I have the same issue, i need help. Please
I have same problem always on back lit so I went to Samsung store in leeds.
the assistant said he couldn't see a recognised
Problem or fault so wouldn't do anything about
it .
ivkos said:
I've got this very same problem. I've tried resetting the AoD app's settings and clearing the device's cache in the recovery but that didn't fix it. I haven't tried factory resetting yet because I don't have the time now to set up my phone from the ground up.
Do you have any fix for this? Have you tried factory resetting?
Click to expand...
Click to collapse
It is not a problem. It is just demand of the users. In complete darkness, the AOD background becomes slightly gray, just to make sure that it remains visible.
Ofcourse it, too, can be fixed, by mocking Ambiant Sensor's values. I used XPOSED and installed "Sensor Disabler" from play store, and used it as an XPOSED Module, in side menu, selected "Light" and then "Mock sensor values". Make sure you just keep the value just above 0 lux ( 210 lux is optimum ). It is a sensitive slider, so just slightly increase it.
Auto brightness will be at constant level, better turn it off. However, AOD will work like a charm now! (PERFECT BLACK CONTRAST)

Weird screen jitter/touch ..phone going crazy

Occasionally my phone will just go crazy, screen will get all jittery,touching on a menu doesn't work ,it mainly happens on noughat stock and custom ROMs.,random apps popping up.any experience anything like that?a simple reboot fixes the problem.
russ722 said:
Occasionally my phone will just go crazy, screen will get all jittery,touching on a menu doesn't work ,it mainly happens on noughat stock and custom ROMs.,random apps popping up.any experience anything like that?a simple reboot fixes the problem.
Click to expand...
Click to collapse
It's an inherent issue with some displays present on the Moto G4. It most often happens when you charge your phone. Too much current builds into the frame of the display and you get weird ghost and jitter touches.
No way around it unless you send it in, and even then it may be only a temporary fix.
I also face this issue. Unable to find solid solution for this. Finally i decied to go for custom rom like RR and Invicta. This still comes occasionally(when Heats too much during phone charging)
russ722 said:
Occasionally my phone will just go crazy, screen will get all jittery,touching on a menu doesn't work ,it mainly happens on noughat stock and custom ROMs.,random apps popping up.any experience anything like that?a simple reboot fixes the problem.
Click to expand...
Click to collapse
On my phone this happens while not charging. Seems to happen about one out of every 3 times the phone is unlocked using the fingerprint sensor. Locking the screen and unlocking via a pin seems to be a reliable way of getting past the issue. Though occasionally it happens on the pin entry screen before it the pin has been entered. Needless to say, it IS annoying.
Same problem which is fixed.
I had this problem with the factory firmware too, intermittent bouts of the phone going crazy with phantom touches on my Moto G4. I sent it to Motorola/Lenovo after the supplier gave me their phone number and they did find the problem and fix it. Now I can play graphic intensive games even during fast charge and the phone is awesome for once. : )
Please note they will fix it for free if in warranty and bootloader not yet modified.
Pressing power button to turn off the display and then pressing power button again to turn the display back on will provide temporary relief from jittery screen. I noticed that the jittery screen has twice subsided over time but came back twice immediately after OS upgrade so blaming the problem on charging, or hardware doesn't seem accurate.
Updated 5/20/2018
As a last ditch effort prior to buying a replacement phone I deleted all apps I installed, reset phone and reinstalled fresh copies of most if the apps I needed.
I don't recall every thing I did but my focus was to delete everything I could and then reset phone back to factory state. After reinstalling, my jittery problem went away and has not returned. Your millage may very, so no promises. Phil
. I have touch screen issue(ghost touch) but this time not screen burn issue.. Now there is in winter.. I have checked battery temperature with ex kernel manager. When i go outside in fog or cool weather and when battery temprature goes to less than 20 degree Celsius phone gonna mad..back key home button automatically pressed..Is there any solution? Without going service center And fix battery battery temperature to 25 degree.?
phone going crazy
Hi,
I am having the same exact problem. I have observed that Google Assistant is intruding because each time this happens, Google Assistant is trying to run. Reboot is a temporary fix but the problem persists. I have removed most of the third party apps just to see if anything changes but it did not work.
This is not something that was happening from the start. I have the phone for about 2 months put the problem only started a couple weeks ago. I would love to hear if there is a solution and what. Thanks
Sadly, but compared to the issues visible indoors, in outdoors this Lenovo gift turns complete crap:
youtu.be/dTcHclVEfCg
"Lenovo Moto Z2 Force touchscreen gets completely unusable when getting outdoors! The video is made at about 0 degrees Celsius. So it takes about 30 sec from getting MotoZ2 Frc to sleep with pwr btn (and wakeing up back) to see the touchscreen goes crazy. At -10C, it takes ~5 sec. At +15-20C, after several min it becomes unresponsive and have to use pwr button to recover.
Lenovo, what you have done to Motorola ?!!"
Can it be fixed somehow with changing the upper protective part? I have seen comments that the touchscreen can stop working completely, if peel off the cover part..

Screen flicker since last update

Since installing the last OTA update (G930PVPU6BRD2) on my Sprint S7, I have a bad screen flickering issue.
(I read books on my phone at night, using Google Play Book or Al Reader, in complete darkness, with the brightness set to minimum.)
Since updating I can't read anymore because at low brightness levels the screen flickers randomly, like a lightbulb with a frayed wire.
I tried disabling ALL display options, like blue light filter, auto brightness, adaptive display, etc. But nothing makes a difference.
Also, every time I reboot it tells me, again, "Android update complete" (or words to that effect.)
Any ideas???
Factory reset is the only idea I have. It's not like we can flash different kernels or anything. If factory reset doesn't work, then take it to sprint.
Sent from my SM-G930U using Tapatalk
Sounds like a bad flash of the update. You're going to have to try a reset. Just don't forget to backup first. That sucks.

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